Canon LTM Filters for a Canon 35mm F2 LTM lens

Canon M39 M39 screw mount bodies/lenses
xayraa33 said:
only a 40mm of the threaded type filter will fit on that lens.
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And not all 40mm will fit. I have the Canon 35/2 and I found a couple of filters marked 40mm in my filter/junk drawer (I have a hundred filters) and they won't fit. Best advice is to simply forget filters. On the plus side the front element is recessed enough, and the lens isn't prone to flare, so you don't really need a hood. Another option (and I haven't tried it for this lens) is to get a gelatin filter, cut it small and tape it carefully to the rear element. I used to do this with some Nikon SLR lenses that filters either weren't available or too costly.
 
Beemermark said:
And not all 40mm will fit. I have the Canon 35/2 and I found a couple of filters marked 40mm in my filter/junk drawer (I have a hundred filters) and they won't fit. Best advice is to simply forget filters. On the plus side the front element is recessed enough, and the lens isn't prone to flare, so you don't really need a hood. Another option (and I haven't tried it for this lens) is to get a gelatin filter, cut it small and tape it carefully to the rear element. I used to do this with some Nikon SLR lenses that filters either weren't available or too costly.
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Beemermark, the Canon LTM lenses probably have a different filter pitch thread than your junk drawer filters. Most Nikkor LTMs of the same era have a 0.5mm pitch thread, while more modern lenses use 0.75mm.

To the OP, you could try Ko.Fe's suggestion for the step up ring. Or you might try this workaround, which I found on this thread. Use this hood designed for Fuji cameras. It seems to fit the Canon 35mm LTM, and has 52mm threaded filters on the front of the hood.
 
Range-rover said:
Would a 40.5mm filter fit on a 35mm F2 lens or it has to be 40mm?
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I frequently use stepping rings (adapter rings) in this way. The fact is that 40-40.5mm stepping rings seem to be easier to buy (and much cheaper costing only a buck or so) than 40mm filters as it is pretty much only Canon (that I know of) who used this diameter filter ring. Hence you are mostly stuck with using old original Canon filters which tend to be pricey because of their age and collectability.

Using a ring also means that if you use several lenses and if you are careful in your choice of filter sizes the one filter can be used on more than one lens by swapping stepping rings as needed. Having said this I was recently looking for a 40-43mm stepping ring which used to be readily available on eBay but have not found any more recently (I often use 43mm diameter accessories like filters and hoods then swap them between 39mm, 40mm, 40.5mm and 41mm lenses as needed by using stepping rings. This failure to find a 40mm to 43mm ring may be temporary however and I also have not checked the current status of 40-40.5mm rings.
 
I have a 40- 40.5 step up as I use the 40.5mm filters on the rokkor cle 40. It might be possible to use a step down to 39mm if you have a stack of those but i guess it might vignette.
 
Beemermark said:
And not all 40mm will fit. I have the Canon 35/2 and I found a couple of filters marked 40mm in my filter/junk drawer (I have a hundred filters) and they won't fit. Best advice is to simply forget filters. On the plus side the front element is recessed enough, and the lens isn't prone to flare, so you don't really need a hood. Another option (and I haven't tried it for this lens) is to get a gelatin filter, cut it small and tape it carefully to the rear element. I used to do this with some Nikon SLR lenses that filters either weren't available or too costly.
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Most of my LTM Canon lenses that use the 40mm filter use a period correct Canon made 40mm filter and a few have a Walz branded filter from the same late 1950s early 1960s era...one lens uses a modern 40mm B+W filter and another uses a snap-on filter that will also fit a lens with a 40.5 mm diameter front thread like the Nikkor 50mm f2 lens in LTM.
 
I’ll add another vote for a step-up ring. Alternatively, you could look for a threaded or slip-on Series VI adapter.
 
I may have a few Canon 40mm filters, but I use the 35/2 without any filters on it.
 
Heliopan makes 40mm filters, top quality made with Schott glass like Zeiss lenses. Not the cheapest, but by far not the most expensive either. In Europe they are available from MacoDirect or FotoImpex, both in Germany. They will ship anywhere, but I'm not familiar with shipping cost outside Europe. There might be other outlets too that I don't know about.
 
Ednalite and Tiffen made properly threaded filters and hoods for this lens. I used to have an Ednalite 2 piece thread-in hood which held a filter for my Canon 35/2. I have no idea what the 3 digit code for the hood was but it definitely exists.

Phil Forrest
 
Mine is wearing a Marumi DHG 40mm and it fits very nicely. As others have mentioned the front element is recessed so a filter for protection may not be a necessity. Also, I can't remember the model, but a lens hood I tried caused severe vignetting, so just be cautious.
 
Everyone says buy a step-up ring. I've never been able to find a 40-40.5 step-up. Am I looking in all the wrong places?
 
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